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Annotation of 43BSD/ingres/source/libq/IIpb_put.c, revision 1.1

1.1     ! root        1: # include      <useful.h>
        !             2: # include      <pipes.h>
        !             3: # include      <sccs.h>
        !             4: 
        !             5: SCCSID(@(#)IIpb_put.c  8.1     12/31/84)
        !             6: 
        !             7: 
        !             8: /*
        !             9: **  IIPB_PUT -- buffered put on pipe
        !            10: **
        !            11: **     This routine puts the named data out onto the pipe
        !            12: **     determined by ppb->pb_proc.
        !            13: **
        !            14: **     Parameters:
        !            15: **             dp -- a pointer to the data to write.
        !            16: **             len -- the length of the data to write.
        !            17: **             ppb -- a pointer to the pipe block.
        !            18: **
        !            19: **     Returns:
        !            20: **             none
        !            21: **
        !            22: **     Side Effects:
        !            23: **             none
        !            24: **
        !            25: **     Trace Flags:
        !            26: **             18.8 - 18.15
        !            27: */
        !            28: 
        !            29: IIpb_put(dp, len, ppb)
        !            30: register char  *dp;
        !            31: register int   len;
        !            32: register pb_t  *ppb;
        !            33: {
        !            34:        register int    i;
        !            35: 
        !            36: 
        !            37:        /*
        !            38:        **  Top loop.
        !            39:        **      Loop until we have run out of things to write.
        !            40:        */
        !            41: 
        !            42:        while (len > 0)
        !            43:        {
        !            44:                /* compute the length to move */
        !            45:                i = min(ppb->pb_nleft, len);
        !            46: 
        !            47:                /* move data into buffer and adjust ptrs & counts */
        !            48:                IIbmove(dp, ppb->pb_xptr, i);
        !            49:                dp += i;
        !            50:                len -= i;
        !            51:                ppb->pb_xptr += i;
        !            52:                ppb->pb_nleft -= i;
        !            53:                ppb->pb_nused += i;
        !            54: 
        !            55:                /* flush block if full */
        !            56:                if (ppb->pb_nleft <= 0)
        !            57:                        IIpb_write(ppb);
        !            58:        }
        !            59: }

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